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/* Copyright (C) 2001 CodeFactory AB
* Copyright (C) 2001 Thomas Nyberg <thomas@codefactory.se>
* Copyright (C) 2001-2002 Andy Wingo <apwingo@eos.ncsu.edu>
* Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
* Copyright (C) 2005 Tim-Philipp Müller <tim centricular net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/* FIXME 0.11: suppress warnings for deprecated API such as GValueArray
* with newer GLib versions (>= 2.31.0) */
#define GLIB_DISABLE_DEPRECATION_WARNINGS
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstalsadeviceprobe.h"
#if 0
G_LOCK_DEFINE_STATIC (probe_lock);
static const GList *
gst_alsa_device_property_probe_get_properties (GstPropertyProbe * probe)
{
GObjectClass *klass = G_OBJECT_GET_CLASS (probe);
static GList *list = NULL;
G_LOCK (probe_lock);
if (!list) {
GParamSpec *pspec;
pspec = g_object_class_find_property (klass, "device");
list = g_list_append (NULL, pspec);
}
G_UNLOCK (probe_lock);
return list;
}
static GList *
gst_alsa_get_device_list (snd_pcm_stream_t stream)
{
snd_ctl_t *handle;
int card, dev;
snd_ctl_card_info_t *info;
snd_pcm_info_t *pcminfo;
gboolean mixer = (stream == -1);
GList *list = NULL;
if (stream == -1)
stream = 0;
snd_ctl_card_info_malloc (&info);
snd_pcm_info_malloc (&pcminfo);
card = -1;
if (snd_card_next (&card) < 0 || card < 0) {
/* no soundcard found */
GST_WARNING ("No soundcard found");
goto beach;
}
while (card >= 0) {
gchar name[32];
g_snprintf (name, sizeof (name), "hw:%d", card);
if (snd_ctl_open (&handle, name, 0) < 0) {
goto next_card;
}
if (snd_ctl_card_info (handle, info) < 0) {
snd_ctl_close (handle);
goto next_card;
}
if (mixer) {
list = g_list_append (list, g_strdup (name));
} else {
dev = -1;
while (1) {
gchar *gst_device;
snd_ctl_pcm_next_device (handle, &dev);
if (dev < 0)
break;
snd_pcm_info_set_device (pcminfo, dev);
snd_pcm_info_set_subdevice (pcminfo, 0);
snd_pcm_info_set_stream (pcminfo, stream);
if (snd_ctl_pcm_info (handle, pcminfo) < 0) {
continue;
}
gst_device = g_strdup_printf ("hw:%d,%d", card, dev);
list = g_list_append (list, gst_device);
}
}
snd_ctl_close (handle);
next_card:
if (snd_card_next (&card) < 0) {
break;
}
}
beach:
snd_ctl_card_info_free (info);
snd_pcm_info_free (pcminfo);
return list;
}
static void
gst_alsa_device_property_probe_probe_property (GstPropertyProbe * probe,
guint prop_id, const GParamSpec * pspec)
{
if (!g_str_equal (pspec->name, "device")) {
G_OBJECT_WARN_INVALID_PROPERTY_ID (probe, prop_id, pspec);
}
}
static gboolean
gst_alsa_device_property_probe_needs_probe (GstPropertyProbe * probe,
guint prop_id, const GParamSpec * pspec)
{
/* don't cache probed data */
return TRUE;
}
static GValueArray *
gst_alsa_device_property_probe_get_values (GstPropertyProbe * probe,
guint prop_id, const GParamSpec * pspec)
{
GstElementClass *klass;
const GList *templates;
snd_pcm_stream_t mode = -1;
GValueArray *array;
GValue value = { 0, };
GList *l, *list;
if (!g_str_equal (pspec->name, "device")) {
G_OBJECT_WARN_INVALID_PROPERTY_ID (probe, prop_id, pspec);
return NULL;
}
klass = GST_ELEMENT_GET_CLASS (GST_ELEMENT (probe));
/* I'm pretty sure ALSA has a good way to do this. However, their cool
* auto-generated documentation is pretty much useless if you try to
* do function-wise look-ups. */
/* we assume one pad template at max [zero=mixer] */
templates = gst_element_class_get_pad_template_list (klass);
if (templates) {
if (GST_PAD_TEMPLATE_DIRECTION (templates->data) == GST_PAD_SRC)
mode = SND_PCM_STREAM_CAPTURE;
else
mode = SND_PCM_STREAM_PLAYBACK;
}
list = gst_alsa_get_device_list (mode);
if (list == NULL) {
GST_LOG_OBJECT (probe, "No devices found");
return NULL;
}
array = g_value_array_new (g_list_length (list));
g_value_init (&value, G_TYPE_STRING);
for (l = list; l != NULL; l = l->next) {
GST_LOG_OBJECT (probe, "Found device: %s", (gchar *) l->data);
g_value_take_string (&value, (gchar *) l->data);
l->data = NULL;
g_value_array_append (array, &value);
}
g_value_unset (&value);
g_list_free (list);
return array;
}
static void
gst_alsa_property_probe_interface_init (GstPropertyProbeInterface * iface)
{
iface->get_properties = gst_alsa_device_property_probe_get_properties;
iface->probe_property = gst_alsa_device_property_probe_probe_property;
iface->needs_probe = gst_alsa_device_property_probe_needs_probe;
iface->get_values = gst_alsa_device_property_probe_get_values;
}
void
gst_alsa_type_add_device_property_probe_interface (GType type)
{
static const GInterfaceInfo probe_iface_info = {
(GInterfaceInitFunc) gst_alsa_property_probe_interface_init,
NULL,
NULL,
};
g_type_add_interface_static (type, GST_TYPE_PROPERTY_PROBE,
&probe_iface_info);
}
#endif
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